Picture frame



FIG. 1 is an elevation view of the front of a picture frame embodying our novel design;

FIG. 2 is an elevation view of the back of the picture frame of FIG. 1;

FIG. 3 is an elevation view of the left side of the picture frame of FIG. 1;

FIG. 4 is an elevation view of the right side of the picture frame of FIG. 1;

FIG. 5 is a top plan view of the picture frame of FIG. 1;

FIG. 6 is a bottom plan view of the picture frame of FIG. 1; and,

FIG. 7 is a perspective view of the picture frame of FIG. 1.

The broken lines are for the illustrative purposes only and form no part of the claimed design. 

The ornamental design for a picture frame, as shown and described. 